【摘 要】
：
To decline the usage of noble metals on air electrode, pulse electrodeposition technology was used to prepare the PtAu catalyst.By Cyclic Voltammograms (CV) test, Scanning Electron Microscopy (SEM) an
【出 处】
：
2012 Postdoctoral Symposium of China on Materials Science &
论文部分内容阅读
To decline the usage of noble metals on air electrode, pulse electrodeposition technology was used to prepare the PtAu catalyst.By Cyclic Voltammograms (CV) test, Scanning Electron Microscopy (SEM) and Energy Dispersive Spectrometer (EDS), the optimized bath composition and deposition process were determined as followed: HAuCl4 of 13.3 mmol/L, H2PtCl6 of 6.7 mmol/L, H2SO4 of 0.5mol/L, peak current density of 100mA/cm2, pulse width of 5% and frequency of 1kHz.The PtAu catalysts that were prepared under the optimized process distributed on air electrode uniformly with particle sizes of 200~300nm and caused the discharge specific capacity of Li/air battery reaching up to 1300mAh/gcarbon+PVDF that was more than two times of that without catalyst.
其他文献
Right evaluation of the bond behavior between corroded reinforcing bar and concrete wrapped with fiber reinforced polymers (FRPs) is a chief problem to confirm the effect of FRP confinement.the pullou
A composite stiffened panels configuration design method is proposed integrating various mechanical simplified models, dealing with global and local buckle separately based on two-level optimization f
By employing 1,4-diazabicyclo[2.2.2]octane (DABCO) as pillared ligand, a new 3D nano-scale zinc phosphite [Zn3(C6H12N2)2(HPO3)3] has been solvothermally prepared.Its structure is constructed of neutra
Residual stresses are inevitable for fibre metal laminate in curing process, and residual tensile stress is in the metal layer and residual compressive stress is in the fibre layer.In this paper, for
Microstructural evolution of the zirconium alloy deformed at a strain rate of about 1000 s-1 was investigated by means of the experimental design.Four different strain levels the zirconium alloy subje
In order to avoid catastrophic accident during the limit of validity, maintenance programs should be made based on multi-site damage.In this paper, the probability of multi-site damage occurrence, pro
Magnesium alloy as a new type of metal material has been widely used in many fields.However,magnesium has the hcp structure, poor plasticity and hard deformation during forming processing.The grain re
This paper is to present a laboratory study on the leaching characteristics of heavy metals including Cu, Zn, Ni, As, Pb in pyrolyzed municipal sewage sludge and application of solid residues in the g
Correlation between site occupation evolution of alloying elements in L12 phase and growth of DO22 phase in Ni75Al7.5V17.5 is studied using microscopic phase field model.The results demonstrate that t
With the development of modem industry, rolling bearings should work under the extreme conditions, such as high speed.Therefore, new high performance rolling bearing material is developed and a suitab